In dictionaries:
Action role-playing game
An action role-playing game (often abbreviated action RPG or ARPG) is a subgenre of video games that combines core elements from both the action game and role-playing genre.
Live action role-playing game
A live action role-playing game is a form of role-playing game where the participants physically portray their characters.(Tychsen et al. 2006:255) "LARPs can be viewed as forming a distinct category of RPG because of two unique features: (a) The players physically embody their characters, and (b) the game takes place in a physical frame.
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